I have the Salium's on my 35' Montana since new in June 2020. I have never covered them and have approximately 50,000 km on them now and they still look great! Lots of tread and no cracking on the sidewalls. I keep them at 100-110 psi cold. I will replace when they hit 5 years or 70,000 km (43,000 mi), whichever comes first. Sounds like your RV Tech was trying to sell you tires!
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2020 3120RL
2017 Chevy Duramax Long box dually diesel.
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